Wuxi Nickel Alloy New Material Technology Co., Ltd
Wuxi Nickel Alloy New Material Technology Co., Ltd
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UNS N08890 Incoloy 890 Rod: Superior Strength and Corrosion Resistance
Incoloy 890, designated as UNS N08890, is a high-performance nickel-chromium-iron alloy known for its exceptional strength and resistance to oxidation, carburization, and sulfidation at temperatures up to 2200°F (1200°C). Its unique composition and properties make it suitable for various demanding applications.
Chemical Composition
The chemical composition of Incoloy 890 is as follows:
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 40.0 - 45.0 |
| Chromium (Cr) | 23.5 - 28.5 |
| Iron (Fe) | Balance |
| Manganese (Mn) | ≤1.5 |
| Carbon (C) | ≤0.1% |
| Copper (Cu) | ≤0.75 |
| Silicon (Si) | 1.0 - 2.0 |
| Aluminum (Al) | 0.05 - 0.6 |
| Titanium (Ti) | 0.15-0.6 |
| Molybdenum (Mo) | 1.0 - 2.0 |
| Niobium (Nb) | 0.2 - 1.0 |
| Tantalum (Ta) | 0.10 - 0.6 |
| Phosphorus (P) | ≤0.03 |
| Sulfur (S) | ≤0.015 |
Mechanical Properties
Incoloy 890 exhibits the following mechanical properties:
| Property | Value (Room Temperature) |
|---|---|
| Tensile Strength (ksi) | 75 (520 MPa) |
| Yield Strength (ksi) | 30 (205 MPa) |
| Elongation (%) | ≥35 |
Physical Properties
Key physical properties of Incoloy 890 include:
Density: 7.94 g/cm³ (0.287 lb/in³)
Melting Point: 1309-1383°C (2388-2521°F)
Applications
Incoloy 890 is widely used in applications requiring high-temperature strength and resistance to corrosive environments, such as:
Heat exchangers
Petrochemical processing vessels
Power generation components
Turbine blades
Combustion chamber components
Standards and Specifications
Incoloy 890 conforms to several industry standards, including:
ASTM B408: Standard Specification for Incoloy 890 Bars and Rods
ASTM B407: Standard Specification for Incoloy 890 Tubing
ASTM B409: Standard Specification for Incoloy 890 Plate, Sheet, and Strip
FAQs
Q1: What is the maximum operating temperature for Incoloy 890?
Incoloy 890 maintains excellent mechanical properties and resistance to oxidation up to temperatures of 2200°F (1200°C).
Q2: How does Incoloy 890 compare to other Incoloy alloys like 803 and 800HT?
Incoloy 890 offers superior resistance to carburizing environments compared to alloy 803 and slightly enhanced properties over alloy 800HT, especially at elevated temperatures.
Q3: Is Incoloy 890 weldable?
Yes, Incoloy 890 can be welded using standard welding techniques suitable for nickel-based alloys.